Hear sound underground from deep hole Kola

Based on the achievements of the two deepest boreholes in the ground, scientists have combined with modern technical measures to be able to "hear" the sounds emitted from underground strata. . This is one of the findings that helps people better understand the mystery of the planet where we live.

>>>Video: Sound underground

In September 1990, a group of German scientists carried out a project called the Continental Deep Drilling Program (also known as KTB deep hole) that placed a drill in southern Germany, creating a deep bore to 9 , 6km to the ground to "look" into the strata below. This is where each of the two continental plates had merged together to form Pangea supercontinent 300 million years ago. More than 120 scientists drilled from the ground through seismic layers, liquid hydrogen layers and reached strata with temperatures up to 315 ^o C.

Images of Continental Deep Drilling Program of German scientists (Source: Wiki)

The project has yielded surprising results on the inner structure of the Earth including temperature maps of geological layers, new information on seismic pressure and impressive images of stacked strata each other.

In addition, another project called "Super Deep Hole Kola " made by the Soviet Union since 1970 drilled to a depth of 12,262 m on the northeastern Kola peninsula of Finland, in the Arctic region. The Kola project has drilled to the cold tundra (about 15,000 meters later) and reached the geologic layer dating up to 2.5 billion years. However, after that the project lost its funding and officially stopped in 2008. Currently, the position of the drill has been covered by a tight sheet of metal.

For current scientists, the feats that KTB and Kola exploration holes bring are all that humans can know about underground. In addition, by modern techniques, scientists have also discovered what sound is underground? An extensive geological research project by German Geological Research Center (currently managing KTB borehole) with artist Lotte Geeven has "heard" the inner sound of the earth based on the conclusion Results obtained from KTB drill hole.

Based on the supplied materials combined with a seismic reader, Geeven discovered high-pitched sounds from underground. She described it as the deep echoes and the cracks of geology. These are the sounds closest to the earth's core that humans can hear.

Photo of Kola wormhole sealed in August 2012 (Source: Wiki)

Another artist, Doug Aitken, is also using his home in California to "hear" the sound of the earth's geological layer. Aitken is living in a house called Sonic House equipped with 9 geological microphones, each designed to capture the murmur and creaking sounds of underground strata.

In addition, a program called "Sounds of Seimic" was set up to record the sounds emitted by the strata. This is a program that directly captures different geological sounds from many parts of the world and combines them into one complete sound.

A project with a similar purpose is to listen to the sound of the earth in seismic battles, also being implemented by the American Seismic Organization at the "Listening to Earthquakes" website . Here, users can hear the sound of the strata emitting earthquakes or earthquakes. On the occasion of the 10th anniversary of 9/11, audio expert Mark Bian released an audio clip containing the sound of geological bout at the collapse of the World Trade Center in New York. You can listen to the audio clip above.

The sounds emanating from the earth are perceived by each person in a different way. Some people think it is a "melancholy howl" , others comment it as "a bell to beat the rhythm in the history of making". However, it is important that humans have gradually discovered the deepest mysteries at their feet thanks to the fruits of scientific and technical progress.